[Zope] Using pychart from a Zope product

[Reuven M. Lerner]

Hi, everyone.  I'm developing a Zope application that needs to do simple 
line-charts, and PyChart looks like a good solution to my problems.

I was able to install PyChart without any trouble, and I also ran the 
command-line tests without any problems.  But when I stick an example 
into a Zope product and invoke it, I get nothing -- not an error 
message, not an output chart, not a security violation of some sort... 
nothing at all.  I know that PyChart is being invoked, because I can 
force an error by invoking theme.get_options(), which throws an error 
due to the lack of command-line options.

I see from the various Zope mailing lists that people are using PyChart, 
and I have a feeling that I'm missing something obvious.  But if someone 
has an idea regarding what I should be doing in order to get PyChart to 
work, I would greatly appreciate it.

Thanks!

Reuven